Permeable, robust and magnetic hydrogel beads: water droplet templating synthesis and utilization for heavy metal ions removal

Wang, Xin; Jing, Shiyao; Hou, Zhaosheng; Liu, Yingying; Qiu, Xiumin; Liu, Yusheng; Tan, Yebang

doi:10.1007/s10853-018-2681-x

Cited by 26 publications

(13 citation statements)

References 57 publications

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“…The desorption rate of both the superabsorbent is close together. The ion diameters are 2.42, 1.34, 1.44, 1.26, 1.60, 1.40, and 1.82 Å for Pb 2+ , Ni 2+ , Cu 2+ , Cr 3+ , Mn 2+ , Zn 2+ , and Cd 2+ , respectively [ 42 , 43 , 44 , 45 , 46 ]. The ion diameters (Å) of hydrated metal ions in aqueous solution are 1.20, 0.715, 0.62, 0.65, 0.86, 0.74, and 0.96 Å for Pb 2+ , Ni 2+ , Cu 2+ , Cr 3+ , Mn 2+ , Zn 2+ , and Cd 2+ , respectively [ 46 ].…”

Section: Resultsmentioning

confidence: 99%

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Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation

et al. 2020

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Poly(acrylic acid/Kryptofix 23-Dimethacrylate) superabsorbent polymer [P (AA/Kry23-DM) SAP] was synthesized by solution polymerization to remove Co, Ni, Cu, Cd, Mn, Zn, Pb, Cr, and Fe ions in water and improve the quality of the water. Kry23-DM cross-linker (1,4,7,13,16-Pentaoxa-10,19 diazo cyclohexene icosane di methacrylate) was synthesized using Kry23 and methacryloyl chloride. The characterization of the molecules was done by FTIR, TGA, DSC, and SEM techniques. The effects of parameters such as pH, concentration, and the metal ion interaction on the heavy metal ions uptaking of SAP was investigated. It was observed that P (AA/Kry23-DM) SAP has maximum water absorption, and the absorption increases with the pH increase. Adsorption rates and sorption capacity, desorption ratios, competitive sorption (qcs), and distribution coefficient (log D) of P(AA/Kry23-DM) SAP were studied as a function of time and pH with the heavy metal ion concentration. Langmuir and Freundlich isotherms of the P (AA/Kry23-DM) SAP were investigated to verify the metal uptake. Molecular mechanic (MM2), Assisted Model Building with Energy Refinement (AMBER), and optimized potentials for liquid simulations (OPLS) methods. were used in quantum chemical calculations for the conformational analysis of the cross-linker and the SAP. ΔH0f calculations of the cross-linker and the superabsorbent were made using Austin Model 1(AM1) method.

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Section: Resultsmentioning

confidence: 99%

“…The cavity radius of the SAP was calculated as 6.8928 Å from SAP’s optimized geometric structure [ 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. Figure 7 shows the optimized geometry of the P (AA/Kry23-DM) SAP according to MM2 method.…”

Section: Synthesismentioning

confidence: 99%

Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation

et al. 2020

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“…There are different ways to produce hydrogel microparticles using microfluidic devices [ 21 , 22 , 23 ]. Xue et al reported an in situ UV photopolymerization method using a microfluidic device to produce 5-fluorouracil loaded biocompatible PEGDA microspheres for drug release [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Generation of Photopolymerized Microparticles Based on PEGDA Using Microfluidic Devices. Part 1. Initial Gelation Time and Mechanical Properties of the Material

et al. 2021

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Photopolymerized microparticles are made of biocompatible hydrogels like Polyethylene Glycol Diacrylate (PEGDA) by using microfluidic devices are a good option for encapsulation, transport and retention of biological or toxic agents. Due to the different applications of these microparticles, it is important to investigate the formulation and the mechanical properties of the material of which they are made of. Therefore, in the present study, mechanical tests were carried out to determine the swelling, drying, soluble fraction, compression, cross-linking density (Mc) and mesh size (ξ) properties of different hydrogel formulations. Tests provided sufficient data to select the best formulation for the future generation of microparticles using microfluidic devices. The initial gelation times of the hydrogels formulations were estimated for their use in the photopolymerization process inside a microfluidic device. Obtained results showed a close relationship between the amount of PEGDA used in the hydrogel and its mechanical properties as well as its initial gelation time. Consequently, it is of considerable importance to know the mechanical properties of the hydrogels made in this research for their proper manipulation and application. On the other hand, the initial gelation time is crucial in photopolymerizable hydrogels and their use in continuous systems such as microfluidic devices.

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“…A number of wastewater treatment techniques have been employed to remove heavy metal ions (Fu and Wang, 2013). These include chemical precipitation (Wang et al, 2018), ion exchange (Kang et al, 2004;Zamora-Ledezma et al, 2021), membrane filtration and electrochemical treatment (Zhou et al, 2015;Qasem et al, 2021), and adsorption (Castro et al, 2018), which is considered as a low-cost, highefficient, eco-friendly and easy to operate technique (Yen et al, 2017). In searching for a simple, ecofriendly, and effective adsorbent for the removal of heavy metals from wastewater, the use of several adsorbents has also been studied.…”

Section: Introductionmentioning

confidence: 99%

Use of Reactivated Spent FCC Catalyst as Adsorbent for Lead (II) Ions from Refinery-based Simulated Wastewater

Abubakar¹,

Waba²,

Yunusa³

et al. 2021

Aceh Int. J. Sci. Technol

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Improper handling of wastewater from various industries causes environmental pollution. Hence, this study involved using a reactivated spent FCC catalyst, a cheap and reliable adsorbent for Pb2+ removal from refinery-based simulated wastewater. In contrast, response surface methodology (RSM) was used to determine the optimum operating condition. The adsorptive capacity of the reactivated spent FCC catalyst was observed using different parameters such as temperature, pH, adsorbent dosage, and contact time. At the end of the study, it was found that the optimum condition for removing Pb2+ was at pH of 7, adsorbent dose of 1.75 g, contact time of 75 mins, and temperature of 117 oC. At this condition, the maximum removal efficiency of Pb2+ was found to be 100 %. A quadratic model equation via central composite design under the RSM was developed to predict the Pb2+ removal from all the input parameters. Based on the F-statistic values, the temperature had the greatest influence on the removal of Pb2+ while adsorbent dosage and contact time were also significant.

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Permeable, robust and magnetic hydrogel beads: water droplet templating synthesis and utilization for heavy metal ions removal

Cited by 26 publications

References 57 publications

Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation

Synthesis, Characterization of a New Polyacrylic Acid Superabsorbent, Some Heavy Metal Ion Sorption, the Adsorption Isotherms, and Quantum Chemical Investigation

Generation of Photopolymerized Microparticles Based on PEGDA Using Microfluidic Devices. Part 1. Initial Gelation Time and Mechanical Properties of the Material

Use of Reactivated Spent FCC Catalyst as Adsorbent for Lead (II) Ions from Refinery-based Simulated Wastewater

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